GIANT OTTER
Pteronura brasiliensis
DESCRIPTION
Giant Otter is commonly known as the river otter and is the largest member of the weasel family. They have a long, slender body, webbed feet, and a thick, muscular tail, which aids in swimming. These social animals are often found in family groups and are known for their playful behavior and vocalizations, which include barks and growls.
FUN FACTS
- Giant Otters are known for their complex social structures and communication skills, which include a variety of vocalizations and body language
- They are also excellent swimmers, capable of diving to depths of up to 30 meters in search of food
- | These otters have a unique adaptation in their eyes that allows them to see clearly underwater, making them highly effective hunters
- Additionally, they have a special layer of fur that keeps them warm in cold waters, allowing them to thrive in their aquatic environments
QUICK INFO
Lifespan10-12 years in the wild, up to 20 years in captivi
Average Weight22-32 kg
Average Length1.5-1.8 m
Diet TypeCarnivore
Social Structuregroup — they live in family groups that can include up to 20 individuals.
Activity PatternDiurnal
Breeding SeasonYear-round, with peaks depending on local conditions
- Habitat
- Giant Otters inhabit freshwater rivers, lakes, and wetlands, primarily in tropical and subtropical regions. They prefer areas with abundant vegetation and clear water, which provide both food and shelter.
- Biomes
- Tropical Rainforest, Freshwater
- Native Range
- Giant Otters are native to the Amazon Basin and parts of the Pantanal in South America.
- Continent
- South America
- Countries
- Brazil, Peru, Colombia, Venezuela, Bolivia
- Diet
- Giant Otters primarily eat fish, but they also consume crustaceans, small mammals, and birds. Their hunting techniques are highly coordinated, often involving teamwork within their social groups.
- Diet Type
- Carnivore
- Favorite Food
- fish
- Social Structure
- group — they live in family groups that can include up to 20 individuals.
- Activity Pattern
- Diurnal
- Group Size
- 5-20
- Territorial
- 1
LC
NT
22-32 kg
Weight
1.5-1.8 m
Length
- Coloration
- dark brown with a lighter underside
- Sexual Dimorphism
- males are generally larger than females
- Lifespan
- 10-12 years in the wild, up to 20 years in captivi
- Gestation Period
- 70-75 days
- Offspring per Birth
- 1-5
- Sexual Maturity
- 2-3 years
- Breeding Season
- Year-round, with peaks depending on local conditions
EN
Endangered
IUCN Red List Status
- Population Status
- The population of Giant Otters is currently decreasing due to habitat loss and hunting.
- Wild Population Estimate
- 1,000-5,000
- Population Trend
- Decreasing
- Endangered
- 1
- Threats
- Main threats include habitat destruction due to deforestation, pollution, and hunting for their fur. These factors have significantly impacted their populations across their range.
- Conservation Program
- Various conservation programs are in place, including habitat protection and anti-poaching initiatives.
- Predators
- Caimans, jaguars, and large birds of prey are known to prey on Giant Otters, especially the young.
- Defense Mechanisms
- They are known to be aggressive when threatened and will defend their territory vocally and physically.
- Found in Zoos
- Uncommon